I have 2 harddisks : master =40 gb 5400 rpm
slave = 180 gb 7200 rpm
an the moment windows is using both of these but more than half of the space is free on both drives. they have both been formatted NTFS
The simplest way for me in that case is to create a fat32 partition on either 1st or 2nd HD, than copy the downloaded from ur ntfs iso to e.g. D:\slackware-9.1-install-d1.iso. Extract the boot n root disks from that iso (bare.i, install1.dsk,install2.dsk, rawrite.exe, some related readmes), use ISO reader, if u don't have any try googling("ISO COMMANDER") ..
Write those boot- n root-disks to disketts
Boot with the diskett, login as root, do partitioning with
cfdisk /dev/hda or cfdisk /dev/hdb ..
Create a root partition for slackware either in hda or hdb as u like, as long as u have free capacity in ur HD u don't need repartition of ur ntfs, cfdisk is just fine enough for that.
The full slackware installation (install everything will take about 2 GB), but u have only 1st disk, so it ll be less than 2gb as Gnome n kde are on the 2nd ISO. They r the real HD/resource taker by linux ..
If ur memory is something 512 u maybe don't need swapspace, but u can create them also, if u want it fast then create swapspace on the other HD where ur root partition for slack/linux is or even create 2 swapspace (in both HDs).
Create 2 empty directories e.g.
mkdir /tmp/iso /tmp/src
mount -t vfat /dev/hda2 /tmp/iso
mount -o loop -t iso9660 /tmp/iso/slackware-9.1-install-d1.iso /tmp/src
Then try some "ls -lA /tmp/src" to see if the iso is correctly mounted, if u can read the iso like u are reading it from a cdrom., then u r ready to run "setup"
Later select your source from "premounted directory" during the setup, pass to the given field "/tmp/src/slackwzare" without the " ".
That is wut I will do it in a few minutes, bcoz my downloading of 1st install CD is also finished ..
FYI, for newbie I'd suggest u to install also either KDE or GNOME, they are more confortabler to use, other WindowsSessionManager are more simpler, but may lack of many features, that one normally assumed their present on WM ..